[ 13.226858][ T289] 8021q: 802.1Q VLAN Support v1.8 [ 14.481213][ T305] br0: port 1(veth1) entered blocking state [ 14.481712][ T305] br0: port 1(veth1) entered disabled state [ 14.482087][ T305] veth1: entered allmulticast mode [ 14.484601][ T305] veth1: entered promiscuous mode [ 14.495312][ T305] ip (305) used greatest stack depth: 24336 bytes left [ 14.584104][ T307] br0: port 2(veth2) entered blocking state [ 14.584446][ T307] br0: port 2(veth2) entered disabled state [ 14.584980][ T307] veth2: entered allmulticast mode [ 14.586906][ T307] veth2: entered promiscuous mode [ 14.777619][ T37] br0: port 1(veth1) entered blocking state [ 14.778100][ T37] br0: port 1(veth1) entered forwarding state [ 14.860251][ T40] br0: port 2(veth2) entered blocking state [ 14.860776][ T40] br0: port 2(veth2) entered forwarding state [ 43.294543][ T377] GACT probability NOT on [ 74.908913][ T593] [ 74.909069][ T593] ============================================ [ 74.909272][ T593] WARNING: possible recursive locking detected [ 74.909476][ T593] 6.13.0-rc5-virtme #1 Not tainted [ 74.909633][ T593] -------------------------------------------- [ 74.909832][ T593] ip/593 is trying to acquire lock: [ 74.909991][ T593] ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 74.910343][ T593] [ 74.910343][ T593] but task is already holding lock: [ 74.910591][ T593] ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 74.910900][ T593] [ 74.910900][ T593] other info that might help us debug this: [ 74.911129][ T593] Possible unsafe locking scenario: [ 74.911129][ T593] [ 74.911358][ T593] CPU0 [ 74.911474][ T593] ---- [ 74.911591][ T593] lock((netdev_chain).rwsem); [ 74.911752][ T593] lock((netdev_chain).rwsem); [ 74.911907][ T593] [ 74.911907][ T593] *** DEADLOCK *** [ 74.911907][ T593] [ 74.912132][ T593] May be due to missing lock nesting notation [ 74.912132][ T593] [ 74.912364][ T593] 2 locks held by ip/593: [ 74.912484][ T593] #0: ffffffff91de7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x653/0xa70 [ 74.912766][ T593] #1: ffffffff91dd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain+0x50/0x90 [ 74.913089][ T593] [ 74.913089][ T593] stack backtrace: [ 74.913288][ T593] CPU: 3 UID: 0 PID: 593 Comm: ip Not tainted 6.13.0-rc5-virtme #1 [ 74.913524][ T593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 74.913721][ T593] Call Trace: [ 74.913840][ T593] [ 74.913936][ T593] dump_stack_lvl+0x82/0xd0 [ 74.914119][ T593] print_deadlock_bug+0x40a/0x650 [ 74.914292][ T593] validate_chain+0x5bf/0xae0 [ 74.914459][ T593] ? __pfx_validate_chain+0x10/0x10 [ 74.914617][ T593] ? hlock_class+0x4e/0x130 [ 74.914775][ T593] ? mark_lock+0x38/0x3e0 [ 74.914897][ T593] __lock_acquire+0xb9a/0x1680 [ 74.915059][ T593] lock_acquire.part.0+0xeb/0x330 [ 74.915225][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 74.915438][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 74.915597][ T593] ? trace_lock_acquire+0x14c/0x1f0 [ 74.915753][ T593] ? lock_acquire+0x32/0xc0 [ 74.915907][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 74.916108][ T593] down_read+0x9f/0x340 [ 74.916232][ T593] ? blocking_notifier_call_chain+0x50/0x90 [ 74.916432][ T593] ? __pfx_down_read+0x10/0x10 [ 74.916595][ T593] blocking_notifier_call_chain+0x50/0x90 [ 74.916754][ T593] __dev_close_many+0xdf/0x2d0 [ 74.916915][ T593] ? __pfx___dev_close_many+0x10/0x10 [ 74.917081][ T593] dev_close_many+0x202/0x650 [ 74.917245][ T593] ? __pfx_dev_close_many+0x10/0x10 [ 74.917402][ T593] ? lockdep_hardirqs_on_prepare+0x275/0x410 [ 74.917615][ T593] vlan_device_event+0x143b/0x2130 [8021q] [ 74.917820][ T593] ? __pfx_vlan_device_event+0x10/0x10 [8021q] [ 74.918036][ T593] ? packet_notifier+0x3b0/0x810 [ 74.918200][ T593] notifier_call_chain+0xcd/0x150 [ 74.918363][ T593] blocking_notifier_call_chain+0x66/0x90 [ 74.918526][ T593] __dev_notify_flags+0x170/0x250 [ 74.918684][ T593] ? __pfx___dev_notify_flags+0x10/0x10 [ 74.918856][ T593] ? __dev_change_flags+0x24f/0x6c0 [ 74.919013][ T593] ? __pfx___dev_change_flags+0x10/0x10 [ 74.919169][ T593] ? rcu_read_lock_any_held+0x43/0xb0 [ 74.919327][ T593] ? validate_chain+0x1fe/0xae0 [ 74.919486][ T593] dev_change_flags+0xec/0x160 [ 74.919646][ T593] cycle_netdev+0x94/0xf0 [vrf] [ 74.919806][ T593] vrf_del_slave+0x40/0x60 [vrf] [ 74.919962][ T593] do_set_master+0xb5/0x1c0 [ 74.920128][ T593] do_setlink.constprop.0+0x80e/0x2300 [ 74.920297][ T593] ? __pfx_do_setlink.constprop.0+0x10/0x10 [ 74.920493][ T593] ? lock_acquire.part.0+0xeb/0x330 [ 74.920653][ T593] ? rtnl_newlink+0x653/0xa70 [ 74.920814][ T593] ? rtnl_newlink+0xb9/0xa70 [ 74.920969][ T593] ? rtnetlink_rcv_msg+0x712/0xc10 [ 74.921129][ T593] ? __mutex_trylock_common+0xfa/0x260 [ 74.921294][ T593] ? __pfx___mutex_trylock_common+0x10/0x10 [ 74.921490][ T593] ? lock_acquire+0x32/0xc0 [ 74.921646][ T593] ? trace_contention_end+0xef/0x150 [ 74.921805][ T593] ? __mutex_lock+0x190/0xbc0 [ 74.921973][ T593] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 74.922132][ T593] ? rtnl_newlink+0x653/0xa70 [ 74.922289][ T593] ? __pfx___mutex_lock+0x10/0x10 [ 74.922453][ T593] ? __rtnl_newlink+0x3f2/0xa80 [ 74.922612][ T593] rtnl_newlink+0x69c/0xa70 [ 74.922770][ T593] ? __pfx_rtnl_newlink+0x10/0x10 [ 74.922927][ T593] ? find_held_lock+0x2c/0x110 [ 74.923093][ T593] ? __pfx___lock_release+0x10/0x10 [ 74.923253][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 74.923415][ T593] ? rtnetlink_rcv_msg+0x6ef/0xc10 [ 74.923578][ T593] ? __pfx_rtnl_newlink+0x10/0x10 [ 74.923734][ T593] rtnetlink_rcv_msg+0x712/0xc10 [ 74.923892][ T593] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 74.924052][ T593] ? hlock_class+0x4e/0x130 [ 74.924210][ T593] ? mark_lock+0x38/0x3e0 [ 74.924331][ T593] ? __lock_acquire+0xb9a/0x1680 [ 74.924490][ T593] netlink_rcv_skb+0x130/0x360 [ 74.924649][ T593] ? __pfx_rtnetlink_rcv_msg+0x10/0x10 [ 74.924812][ T593] ? __pfx_netlink_rcv_skb+0x10/0x10 [ 74.924971][ T593] ? netlink_deliver_tap+0x13e/0x340 [ 74.925132][ T593] ? netlink_deliver_tap+0xc3/0x340 [ 74.925291][ T593] netlink_unicast+0x44b/0x710 [ 74.925454][ T593] ? __pfx_netlink_unicast+0x10/0x10 [ 74.925648][ T593] ? find_held_lock+0x2c/0x110 [ 74.925808][ T593] netlink_sendmsg+0x723/0xbe0 [ 74.925976][ T593] ? __pfx_netlink_sendmsg+0x10/0x10 [ 74.926140][ T593] ____sys_sendmsg+0x7ac/0xa10 [ 74.926300][ T593] ? __pfx_____sys_sendmsg+0x10/0x10 [ 74.926457][ T593] ? __pfx_copy_msghdr_from_user+0x10/0x10 [ 74.926656][ T593] ___sys_sendmsg+0xee/0x170 [ 74.926815][ T593] ? __pfx____sys_sendmsg+0x10/0x10 [ 74.926978][ T593] ? kasan_save_stack+0x34/0x50 [ 74.927145][ T593] ? kasan_save_stack+0x24/0x50 [ 74.927304][ T593] ? __kasan_record_aux_stack+0x8e/0xa0 [ 74.927464][ T593] ? __call_rcu_common.constprop.0+0xa1/0x4b0 [ 74.927662][ T593] ? __x64_sys_close+0x7c/0xd0 [ 74.927821][ T593] ? do_syscall_64+0xc1/0x1d0 [ 74.927982][ T593] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.928180][ T593] ? __lock_acquire+0xb9a/0x1680 [ 74.928345][ T593] ? find_held_lock+0x2c/0x110 [ 74.928510][ T593] ? __lock_release+0x103/0x460 [ 74.928667][ T593] ? __virt_addr_valid+0x22b/0x430 [ 74.928825][ T593] ? __pfx___lock_release+0x10/0x10 [ 74.928984][ T593] ? __pfx_lock_acquire.part.0+0x10/0x10 [ 74.929145][ T593] __sys_sendmsg+0x109/0x1a0 [ 74.929301][ T593] ? __pfx___sys_sendmsg+0x10/0x10 [ 74.929460][ T593] ? __pfx_slab_free_after_rcu_debug+0x10/0x10 [ 74.929664][ T593] do_syscall_64+0xc1/0x1d0 [ 74.929819][ T593] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 74.930017][ T593] RIP: 0033:0x7f5d371ce9a7 [ 74.930183][ T593] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 [ 74.930760][ T593] RSP: 002b:00007ffda74fea38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 74.931002][ T593] RAX: ffffffffffffffda RBX: 00007ffda74ff160 RCX: 00007f5d371ce9a7 [ 74.931247][ T593] RDX: 0000000000000000 RSI: 00007ffda74feaa0 RDI: 0000000000000005 [ 74.931482][ T593] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000 [ 74.931731][ T593] R10: 000000003553a910 R11: 0000000000000246 R12: 0000000000000004 [ 74.931973][ T593] R13: 0000000067792a63 R14: 0000000000498600 R15: 0000000000000000 [ 74.932213][ T593] [ 74.936486][ T593] br1: port 1(veth0) entered blocking state [ 74.936697][ T593] br1: port 1(veth0) entered disabled state [ 74.936902][ T593] veth0: entered allmulticast mode [ 74.938423][ T593] veth0: entered promiscuous mode [ 74.946281][ T593] ip (593) used greatest stack depth: 23304 bytes left [ 74.993247][ T594] br1: port 1(veth0) entered blocking state [ 74.993531][ T594] br1: port 1(veth0) entered forwarding state [ 77.223146][ T599] veth0: left allmulticast mode [ 77.223353][ T599] veth0: left promiscuous mode [ 77.223629][ T599] br1: port 1(veth0) entered disabled state [ 88.367048][ T715] br0: vlan filtering disabled, automatically disabling multicast vlan snooping [ 88.786692][ T727] br0: port 2(veth2) entered disabled state [ 88.848031][ T728] br0: port 1(veth1) entered disabled state [ 88.903351][ T729] veth2: left allmulticast mode [ 88.903583][ T729] veth2: left promiscuous mode [ 88.903856][ T729] br0: port 2(veth2) entered disabled state [ 88.905096][ T729] veth1: left allmulticast mode [ 88.905307][ T729] veth1: left promiscuous mode [ 88.905587][ T729] br0: port 1(veth1) entered disabled state